Cellular mobile radio communication system

Abstract

A method of autonomously generating neighboring cell information in a cellular mobile radio communication system including: transmitting, by a first base station, a measurement radio signal through a radio channel for radio field intensity measurement; measuring a radio field intensity of the measurement radio signal received from the first base station; determining based on the measured radio field intensity whether the first base station is a neighboring cell; registering identification information of the first base station in second office data of neighboring cells possessed by itself when the first base station is determined as the neighboring cell; obtaining first office data possessed by the first base station based on the identification information; and reflecting the first office data obtained from the first base station as neighboring cell information in the second office data possessed by itself, the measuring, determining, registering, obtaining and reflecting being sequentially performed by each of second base stations.

1 . A method of autonomously generating neighboring cell information in a cellular mobile radio communication system comprising at least a plurality of base station devices, each constituting a cell covering a service are a for providing a mobile terminal with a mobile communication service, comprising:
 transmitting, by a first base station device of the plurality of base station devices, a measurement radio signal through a radio channel for radio field intensity measurement;   measuring a radio field intensity of the measurement radio signal received from the first base station device;   determining based on the measured radio field intensity whether or not the first base station device is a neighboring cell;   registering identification information of the first base station device in second office data of neighboring cells possessed by itself when the first base station device is determined as the neighboring cell;   obtaining first office data possessed by the first base station device based on the identification information; and   reflecting the first office data obtained from the first base station device as neighboring cell information in the second office data possessed by itself, wherein the measuring, determining, registering, obtaining and reflecting being sequentially performed by each of a plurality of the other second base station devices.   
   
   
       2 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein the radio channel for the radio field intensity measurement is predetermined according to a radio transmission method. 
   
   
       3 . The method of autonomously generating the neighboring cell information according to  claim 1 , further comprising recognizing, by each of the second base station devices, the first base station device based on the identification information contained in the measurement radio signal. 
   
   
       4 . The method of autonomously generating the neighboring cell information according to  claim 1 , further comprising deleting, by each of the second base station devices, the neighboring cell information corresponding to the first base station device from the second office data when the first base station device is determined as not being the neighboring cell and the first base station device has been registered as the neighboring cell in the second office data currently possessed by itself. 
   
   
       5 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein:
 the cellular mobile radio communication system further comprises at least one radio network controller; and   the method further comprises instructing, by the radio network controller, the first base station device to transmit the measurement radio signal.   
   
   
       6 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein:
 the cellular mobile radio communication system further comprises at least one radio network controller; and   when a plurality of the radio network controllers are present, the method further comprises:
 directly instructing, by a first radio network controller of the plurality of radio network controllers, the first base station device to transmit the measurement radio signal; and 
 transferring, by a second radio network controller of the plurality of radio network controllers, an instruction of transmitting the measurement radio signal from the first radio network controller to another first base station device under its control. 
   
   
   
       7 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein:
 the cellular mobile radio communication system further comprises at least one radio network controller,   the method further comprises instructing, by the radio network controller, the first base station device to transmit the measurement radio signal upon restart of one of the first base station devices.   
   
   
       8 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein:
 the cellular mobile radio communication system further comprises at least one radio network controller; and   the method further comprises periodically repeating, by the radio network controller, an instruction of transmitting the measurement radio signal to the first base station device to allow the neighboring cell information to be dynamically updated.   
   
   
       9 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein:
 the cellular mobile radio communication system further comprises at least one radio network controller; and   the method further comprises instructing, by the radio network controller, the first base station device to transmit the measurement radio signal according to an instruction from a maintenance person.   
   
   
       10 . The method of autonomously generating the neighboring cell information according to  claim 1 , wherein the neighboring cell information to be protected can be customized by a maintenance person. 
   
   
       11 . The method of autonomously generating the neighboring cell information according to  claim 1 , further comprising using geographic information of a GPS (Global Positioning System) to generate auxiliary data for generating the neighboring cell information. 
   
   
       12 . The method of autonomously generating the neighboring cell information according to  claim 1 , further comprising using geographic information of a GPS (Global Positioning System) to exclude the neighboring cell information corresponding to the first base station device that is not geographically the neighboring cell from the second office data. 
   
   
       13 . The method of autonomously generating the neighboring cell information according to  claim 1 , further comprising:
 determining, by the first base station device, timing of measuring the radio field intensity by a negotiation with the second base station device through a channel dedicated to communication between the base station devices; and   starting, by the second base station device, measuring the radio field intensity for generating the neighboring cell information.   
   
   
       14 . The method of autonomously generating the neighboring cell information according to  claim 13 , wherein the channel dedicated to the communication between the base station devices is any of a radio channel and a wired channel. 
   
   
       15 . A method of autonomously generating neighboring cell information in a cellular mobile radio communication system comprising at least a plurality of base station devices, each constituting a cell covering a service area for providing a mobile terminal with a mobile communication service, comprising:
 measuring, by a mobile terminal resident in a cell of a first base station device of the plurality of base station devices, measurement radio signals through a radio channel for radio field intensity measurement from a plurality of the other second base station devices to measure radio field intensities;   generating, by the mobile terminal, neighboring cell list information for the first base station device based on the result of measurement to notify the first base station device of the generated neighboring cell list information; and   generating, by the first base station device notified of the neighboring cell list information by the mobile terminal, neighboring cell information as office data based on identification information of the second base station devices contained in the neighboring cell list information.   
   
   
       16 . The method of autonomously generating neighboring cell information according to  claim 15 , wherein the mobile terminal measures the radio field intensity of the measurement radio signal while setting a control channel or idling. 
   
   
       17 . A method of autonomously generating neighboring cell information in a cellular mobile radio communication system comprising at least a plurality of base station devices, each constituting a cell covering a service area for providing a mobile terminal with a mobile communication service, comprising:
 receiving, by a mobile terminal resident in a cell of a first base station device of the plurality of base station devices, radio signals through a signaling channel from a plurality of the other second base station devices to detect modulation codes;   notifying, by the mobile terminal, the first base station device of list information of the detected modulation codes; and   converting, by the first base station device notified of the list information of the modulation codes by the mobile terminal, the list information of the modulation codes into identification information of the second base station devices to generate neighboring cell information as office data.